Saint Peter Port n (Placename) a port and resort in the Channel Islands: the capital of the Bailiwick of Guernsey, on the E coast of the island of Guernsey. Pop: 28 310 (2001) Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014